Finding the Fourth Proportional to 42,804.33, 64,218.30 and 17,856.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,804.33 : 64,218.30 = 17,856.10 : x
2. Step 2: Convert to fraction form
   42,804.33/64,218.30 = 17,856.10/x
3. Step 3: Cross multiply
   42,804.33x = 64,218.30 × 17,856.10
4. Step 4: Simplify right side
   42,804.33x = 1,146,688,386.63
5. Step 5: Solve for x
   x = 1,146,688,386.63/42,804.33
6. Step 6: Final answer
   x = 26,789.07